Reference : Scalar and fermionic extensions of the Standard Model
Dissertations and theses : Doctoral thesis
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Scalar and fermionic extensions of the Standard Model
Degée, Audrey mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Physique des astroparticules >]
Université de Liège, ​Liège, ​​Belgique
Ph.D. in Physics
Cudell, Jean-René mailto
Magain, Pierre mailto
Ivanov, Igor mailto
Aristizabal Sierra, Diego mailto
Hambye, Thomas mailto
Nardi, Enrico mailto
[en] In this thesis several aspects of beyond SM physics schemes have been treated. In particular, two categories of models have been considered: ($i$) models with extra
Higgs ElectroWeak (EW) doublets (multi-Higgs-doublet models), ($ii$) models with new fermion EW singlets (type-I seesawmodels). In the first category, two problems
associated with the most general two-Higgs-Doublet Model (2HDM) and
with the three-Higgs-Doublet Model (3HDM) have been tackled. In the
former case the scalar mass spectrum has been derived in a
basis-invariant fashion whereas in the later, after introducing a
general procedure for the minimization of highly symmetric potentials,
the minimization of an $S_4$ and of an $A_4$ 3HDM has been
analyzed. In the second category, the possibility of envisaging
seesaw-like models yielding sizeable lepton-flavor-violating decay
rates has been investigated. With the models at hand, the
corresponding charged lepton-flavor-violating phenomenology has been
studied focusing on rare muon decays, for which forthcoming
lepton-flavor-violating experiments will be able to prove large parts
of their parameter space.
Interactions Fondamentales en Physique et Astrophysique (IFPA)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Scalar and fermionic extensions of the Standard Model

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